public class xianshen {
    int age;
    int id;
    String name;
    dn paiz;
    void study (){
        System.out.println("测试"+paiz.PAIZ);
    }
    public static void main(String[] args) {
        xianshen xs = new xianshen();
        xs.age = 15;
        dn c1 = new dn();


    }

}
    class  dn {
    String PAIZ;


}
